Medway's primary education remains the poorest in the country according to new league tables released today.
It is yet another indictment of Medway's primary education - the authority came bottom of the provisional Key Stage 2 league tables in August and at the end of last year was ranked worst in England by Ofsted.
Meanwhile Kent has remained average overall, according to government measures of primary attainment.
Scroll down to find out how your child's school is performing
The latest primary school performance tables show the number of year 6 pupils taking SATs tests in reading, writing and maths at each school.
They record the average point score of each school, and the percentage of pupils at each school getting level 4 - which is the average for the age group - and level 5, which is above average.
"Medway bosses should consider their position, because they are letting the children of Medway down" - Peter Read
The government expects schools to make sure 65% of pupils reach level four.
In the case of Medway, just 73% of schools have met this target, placing the authority joint-last in the English league table with Poole.
Kent has fared slightly better, achieving 80%, in line with the national average, while about one in four pupils achieved the higher Level 5 in the tests.
Peter Read, education adviser, says the terrible results mean Medway education bosses should consider their position.
"Medway has been in the bottom for far too many years - it's not good enough," he said.
"I think with individual schools and individual years there will be variation, but what is clear is Medway is vastly under performing for the ability of its children.
"If we look at the standard of 65%, 12 Medway schools failed that last year.
"Medway bosses should consider their position, because they are letting the children of Medway down.
"The children can do well if they are given a proper education."
Medway Council says it is determined to make improvements by this time next year.
Portfolio holder for children's services Cllr Mike O’Brien said: "We said when the provisional results came out that there were huge variations in Key Stage 2 results this year and there was not one common reason why this happened.
"Since August we have launched our Get Medway Learning initiative to raise standards in our schools.
"While we have some excellent schools in the area, some are not performing to the expected standard and while they are working hard to improve, some are not making progress quickly enough.
"We have introduced an accelerated programme for primary teachers to improve standards and we have arranged to bring into Medway some of London’s top headteachers to help us in this.
"But schools can’t do it alone and we are encouraging local people, universities and businesses to pledge time to support our children’s learning."
How does your child's primary school compare? Click the below links to find out15120954300-MEDWAY PRIM TABLE 2015.pdf1512095450-KENT PRIM TABLE 2015.pdf